code: def __init__(self, code, city):
      self.code = code
      self.city = city
  
imports: from sqlalchemy import Column
  from sqlalchemy import ForeignKey
  from sqlalchemy import Integer
  from sqlalchemy import String
  from sqlalchemy.orm import relationship
  from .caching_query import RelationshipCache
  from .environment import Base
  from .environment import bootstrap
label_desc: Use image node_id 2 to create a new PostalCode object from inherited base classes: Base with example: obj = PostalCode(code, city)